Abstract: An improved support rib for a satellite dish antenna is disclosed wherein a male side rib selectively engages a female side rib continuously along the longitudinal length of the support rib and wherein the male and female side rib each comprises a continuous engagement device having a lower channel for selectively receiving the side of a parabolic reflective petal and an upper member for one-time flexing downwardly over the lower channel to firmly engage and hold the side of the reflective petal continuously along the longitudinal length of the support rib. When flexed downwardly, the upper member lies in the same plane as the support rib and the petal.